Basin for clarifying and cleansing dirty and drain waters



Dec. 31, 1940. c. cLERfcl 222636 BASIN FOR CLARIF'YING AND CLEANSINGDIRTY AND DRAIN WATERS Fil ed Nov. 29. 1938 Patented Dec. 31, 1940UNITED STATES BASIN FOR. CLARIFYING AND CLEAN SING DIRTY AND DRAINWATERS Carlo Clerici, Como, Italy 1 Application November 29, 1938,Serial No. 243,003

I In Italy December 6, 1937 1 2 Claims. (01. 210-'-c) The presentinvention relates to a basin for the clarification and purification offoul water and sewage.

The attached drawing shows schematically a practical construction of thebasin according to the invention, for a simple demonstration, notlimiting the construction to the example. In the said drawing arerepresented by: the Figures 1 and 2, two longitudinal sections; Figure 3a horizontal section along the line I-I in Figure 1; Figure 4 a viewfrom above.

The arrangement is formed and acts as follows:

The dirty waters enter, through an admitting mouth A directly into aclarifying chamber G-G', which is formed by an envelope, which in itsturn is constituted by two surmounting parts 0, P. The lower border ofthe lower part 0 presents a peripherical projecture R towards the innerside, in the shape of a funnel. Under the chamber GG' there is placed adepositing chamber M, formed by an envelope N. In its own interior, thechamber G-G' presents a separating chamber I, formed by a casing L, openat the bottom and closed at the top by a removable lid C. This casing isprovided with windows H on the part of its wall that faces the pipe Aand on the lateral parts of the wall. Moreover it is provided at the topwith horizontal fins E, serving to keep it suspended in the chamber G-G,and bearing upon projections F on the receptacle P. The receptacle L ismoreover provided with two vertical fins U, arranged one on each side ofthe mouth of the pipe A, and with two vertical fins V arranged one oneach side of the mouth of the pipe B. The fins U terminate at the levelof the liquid, while the fins V descend to the lower edge of thereceptacle L.

The heavy materials fall directly on the bottom of the chamber M, whilstinstead the light materials are gathered in the chamber I, in passingeither through the windows H, or under the lower border of the envelopeL.

In the chamber I these materials are fermenting, decomposing throughbiochemical transformation and hemolyse process, then they too in a goodproportion come to fall, in the form of flakes, on the bottom of thechamber M.

The 'fiiuds gathered in M enter through an increased fermenting process,with overheating, and undergo, from the part of the developingmicro-organisms, the known decomposing action, biochemicaltransformation, solubilization. In the same time they are developingabundant quantities of melan and carbonic gas, which in form of bubblesare ascending vertically and are gathered in the top space of thechamber 1, above the liquid.

The micro-organisms, after having finished their above said dissolvingaction on the heavy materials gathered on the bottom of the chamber Mare dragged by the said bubbles into the chamber I, where they repeattheir action on the light materials, which there remain still in 10suspense. Reaching then the surface of the liquid in the chamber 1,above which there are the aforesaid melan and carbonic gas with analmost absolute absence of oxygen, the said micro-organisms are put inimpossible conditions of life and then must die.

To the discharging mouth B the waters arrive clear, fresh, notputrescent, harmless to animal life and can therefore plainly andwithout danger of defilement be put into the waters of undergroundpipes, lakes, rivers, torrents, covered and discovered brooks, absorbingwells, e 0.

Considering the minimum percentage of the heavy materials, which arepractically ascertained in the dirty and drain waters; the considerablereduction of the materials themselves owing to the yeasts, to which theyhave been repeatedly submitted; the quantity of materials, which areconveyed in a colloidal form by the discharging waters and which arerendered harmless by the biochemical decomposition and transformation,the deposits which are to be mechanically removed from the basin M arevery small. According to the practice their extraction can be effectedevery two or three years (after inspection), and this by specialshovels, and better still, if possible, by the ordinary hydro-barometricsystem in use for expurgin common sewers.

The basins capacity will be calculated every time according to theprescriptions of biologists in this matter, and according to the qualityof the waters.

The advantages offered by the invention are of a technical-economical,and of a hygienal order. The first ones are given by the greatersimplicity of building up and acting, and by the difficulty of cloggingand obstructing, whereby its action might be impaired. The otheradvantage is afforded by the good protection granted by the doubleclosure.

The various constituting parts can be con veniently built up by cement,eventually watercover, said envelope being closed at the top by saidremovable cover and provided in its wall with an inlet aperture and anoutlet aperture for water arranged at about the same level and indiametrically opposite positions, projections internally of saidenvelope at about the height of the upper surface level of the water, abelllike casing within the receptacle and envelope having a removablelid and a mouth directed towards the aperture of the hopper-shapedbottom, external fins on the bell-shaped casing bearing upon the saidprojections, four vertical fins on the bell-shaped casing, two of saidfins extending downwardly from the upper edge of the bell-shaped casingand arranged on both sides of the said water inlet aperture, the twoother fins extending downwardly from the upper edge of the bell-shapedcasing as far as its lower edge and arranged on the two sides of thesaid outlet aperture for the water, and windows in the vertical wall ofthe bell-shaped casing arranged only below the inlet aperture and uponthe sides of the bell.

2. A basin as claimed in claim 1, characterized in that the two firstmentioned fins extend from the upper edge of the bell-shaped casing tothe level of the water.

CARLO CLERICI.

